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一、工程概况某城市综合体由三栋写字楼(分别为48层、48层、24层)及其附属商业裙楼组成,地下室2层,局部3层,建筑面积约73 100m~2。基础形式采用桩-筏板基础,主体塔楼结构由外围20根钢管混凝土巨型柱、钢筋混凝土核心筒及钢筋混凝土大梁三大主体构件共同组成框架-核心筒结构体系。基础筏板顶面标高为-9.050m,局部筏板顶面标高-10.750m,钢管混凝土巨型柱下桩基承台尺寸为
I. Project Overview A city complex consists of three office buildings (48th, 48th, and 24th floors, respectively) and its affiliated commercial podium. The basement has 2 floors and 3 floors with a gross floor area of 73,100m 2. The basic form of pile - raft foundation, the main tower structure from the outer 20 giant steel tubular concrete columns, reinforced concrete core and three major components of the main beam frame composed of core - core tube structure system. The top elevation of the basic raft is -9.050m, the elevation of the top of the local raft is -10.750m, the size of the pile cap of pile foundation of the steel tubular concrete huge column is